Forge: Incomplete PKCS#7 padding validation in AES/DES CBC and ECB decryption

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-118776
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 19:17:20 UTC
Updated2026-11-04 02:17:15 UTC
DescriptionForge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used decipher.finish(), CBC and ECB modes, PKCS#7 padding to process the relevant input or security decision. node-forge validated only the final byte of PKCS#7 padding during CBC and ECB decryption and accepted zero, oversized, or mismatched padding bytes. Malformed ciphertext could consequently be accepted and up to four plaintext blocks could be silently removed, causing an integrity failure in applications that treated successful decryption as proof of valid padding. This issue is fixed in version 1.4.1.

Risk And Classification

Primary CVSS: v3.1 3.7 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.001310000 probability, percentile 0.026550000 (date 2026-11-01)

Problem Types: CWE-20 | CWE-354 | CWE-20 CWE-20: Improper Input Validation | CWE-354 CWE-354: Improper Validation of Integrity Check Value

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Digitalbazaar Forge affected < 1.4.1 Not specified

References

ReferenceSourceLinkTags
github.com/digitalbazaar/forge/releases/tag/v1.4.1 [email protected] github.com
github.com/digitalbazaar/forge/security/advisories/GHSA-2vgq-wchc-25w7 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/digitalbazaar/forge/commit/81774ff99e2da64aec9a43591df45a3600... [email protected] github.com
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